Product Overview

Analog Generator TSG170A Features & Benefits Simple, Effective Test-Signal Complement Master Sync Generator with Digital Genlock Separate Timing Controls for Sync and Test Signals Separate SMPTE Color-Bars Output with Programmable ID (Opt. 01) Audio-Tone Output (Opt. 01) Tape-Leader Countdown (Opt. 01) Opt. 1V Signal Set for VM700T Measurements Applications Test Signal and Sync Generation for Broadcast and Postproduction Equipment Maintenance The Tektronix TSG170A NTSC Television Generator offers you the test signals you need plus the advantages of master- and genlock-sync capability. It provides true 10-bit digital signal accuracy with a full complement of test signals and a stable master sync generator. The rugged, compact TSG170A is designed to support both operational and maintenance requirements. The TSG170A Option 01 provides even more versatility by adding a separate SMPTE color-bar generator, programmable identification, audio-tone output, and tape leader countdown. Test-Signal Generator The accuracy and long-term stability of the TSG170A test signals are enhanced by its precision digital-to-analog converter. Each converter is automatically laser trimmed to 12-bit accuracy. The TSG170A test-signal generator's simple front-panel controls provide selection of: SMPTE color bars Convergence Pulse and bar with window Multiburst 5-step luminance staircase Luminance ramp Modulated ramp Selectable 10% or 90% APL Bounce 10 and 100 IRE flat fields Red field Multibars NTC 7 composite System-test matrix Monitor-setup matrix 5-MHz line sweep Multipulse Color-bar blanking width is 10.9 µs to facilitate verification of proper blanking throughout your system. VM700A Measurements Standard Signal Set Opt. 1V Signal Set A signal set designed specifically to support VM700A measurements is now available for the TSG170A. This signal set is available as Opt. 1V and differs from the standard signal set as follows: Pulse and Bar NTC7 Composite Other Signals: Multibars FCC Color Bars NTC7 Composite (Sin x)x Line Sweep w/ Markers Chroma Freq. Response Multipulse Field Square Wave System Test Matrix NTC7 Combination Monitor Set Matrix New Matrix 10% Flat Field 50% Flat Field Red Field Red Field (12.5% Pedestal) (50% Pedestal) The new matrix is composed of FCC color bars, 50% flat field, NTC 7 combination and composite, (Sin x)x, red field, and chroma frequency response. Master Sync Generator with Digital Genlock The TSG170A sync generator's stable color standard and unique digital genlock make it ideal for either master generator or slave operation. All outputs are correctly SCH phased, even if the TSG170A is locked to an improperly SCH-phased reference input. The digital genlock calculates sync timing and subcarrier phase to properly identify color framing of the input reference signal. The TSG170A automatically senses composite video or 3.58-MHz subcarrier reference inputs and, in the absence of a reference input signal, automatically switches to its own internal reference. This high-stability crystal oscillator, with its constant temperature oven, ensures long-term frequency stability. TSG170A rear panel. System Timing Control Front-panel controls are provided for phasing of all outputs relative to the genlock source. In addition, a separate set of timing controls is provided to move the pulse and subcarrier outputs relative to the black-burst and test-signal outputs. This simplifies system timing and eliminates delay lines. Up to eight genlock and sync timing settings may be stored in nonvolatile memory to prevent loss in the event of a power failure. The timing presets may be recalled through the remote control port. A front-panel lockout feature prevents inadvertent changes to the front-panel timing controls. Flexible Pulse Output The TSG170A has eight sync generator outputs; four fixed and fourprogrammable. The primary outputs for SUBCARRIER, SYNC, BLANKING, and BLACKBURST are fixed. The secondary outputs, BURST FLAG, H DRIVE, V DRIVE, and COLOR-FRAME PULSE, are programmable and can be changed to provide a second set of primary outputs. The BLANKING output may be set to 10.2, 10.7, or 10.9 µs. SMPTE Color Bars with Programmable ID, Audio Tone, and Tape-Leader Countdown (Option 01) Option 01 adds a separate SMPTE color-bar output for routine studio needs, such as tape leaders, freeing the front-panel selected test signals for engineering and maintenance. An ID of up to 12 alphanumeric characters may be inserted in the SMPTE color-bar output. This front-panel programmable ID is ideal for identifying satellite feeds and videotapes. Option 01 also provides a 450-Hz audio-tone output, useful for checking program line continuity and adjusting audio levels. The tone can be adjusted over a 0-dBm to 8-dBm range into 150 ohm or 600 ohm. Also included in Opt. 01 is a tape-leader countdown. When initiated, the full-time SMPTE color-bars output goes to black and the audio tone is switched off. Simultaneously, a ten-to-two (in seconds) countdown is initiated and overlaid on the black background. The black background remains until the count down program is terminated. Control of the tape-leader countdown is through the remote-control connector. Remote Control Remote selection of internal/external reference, ID preset, genlock, and sync-timing presets and test signal is provided. Selection is made with ground closures through a rear-panel connector. Packaging The TSG170A's rugged, 1.75-inch package makes it ideal for remote vans or anywhere space is at a premium. Characteristics Test-Signal Generator Luminance Amplitude Accuracy - ±1% Chrominance-to-Luminance Gain - ±1% Output Impedance - 75 ohm Return Loss - 36 dB to 4.2 MHz Test Signals SMPTE Color Bars Convergence - 14 lines per field, 17 lines per horizontal. Pulse and Bar with Window - 2T Pulse HAD: 250 ns ±25 ns. White Bar Amplitude: 100 IRE. Field Tilt: 0.5%. Line Tilt: 0.5%. Multiburst - White Reference Bar Amplitude: 428.6 mV (60 IRE). Packet Amplitude: 428.6 mVpk-pk (60 IRE). Burst Frequencies: 0.5, 1.0, 2.0, 3.0, 3.58, and 4.2 MHz. 5-Step Staircase - 714.3 mV (100 IRE). Luminance Ramp - 0 to 714.3 mV (100 IRE). Modulated Ramp - Chrominance Amplitude: 285.7 mV (40 IRE). Diff Gain: 0.6%. Diff Phase: 0.3. APL - 10% and 90%. AC Bounce - Bounce Rate: 1-second high, 1-second low. Flat Fields - 10 IRE, 100 IRE. Red Field - Luminance Pedestal: 153.6 mV (21.5 IRE). Multibars - Color bars and multiburst. NTC 7 Composite - 80 IRE, 5-step modulated staircase and pulse and bar. Line Sweep - 714.3 mVpk-pk. Linear sweep from 500 kHz to 5 MHz. Multipulse - Amplitude: 714.3 mV. Frequencies: 0.5, 1.0, 2.0, 3.0, 3.58, and 4.2 MHz. System Test Matrix - Multibars and NTC7. Monitor Setup Matrix - Convergence, IWQB, convergence, color bars, reverse bars, and convergence. DAC Test - 500 kHz and 3.58 MHz. Opt. 01 Color Bars - SMPTE color bars. Identification - 12 characters, 7 × 9 matrix. Audio Tone - 449.55 Hz (locked to vertical), distortion less than 0.01%, 0 to 8 dBu into 150 ohm, 600 ohm, or high impedance. Click ID adjustable 0.2 to 4 Hz. Sync Generator Subcarrier Stability - 3.579545 MHz ±1 Hz over temperature; typically less than 1 ppm per year drift after initial aging Black-Burst Output - Setup: 7.5 IRE Blanking: Less than 10.6 µs Pulse Outputs (General Characteristics) - Amplitude: 4.0 ±0.1 V Impedance: 75 ohm Return Loss: 30 dB to 4.2 MHz Rise Time: 140 ns ±20 ns Pulse Outputs (Signals) - Composite Sync ¿ Blanking: Horizontal Blanking Duration: 10.7 µs ±0.1 µs, jumper selectable for 10.5 µs or 10.9 µs Vertical Blanking Duration: 20 lines, jumper selectable for 19 or 20 lines Burst Flag Horizontal Drive Vertical Drive Color Frame Pulse: Field 1, line 11 Subcarrier Output - Amplitude: 2 Vpk-pk ±0.2 V Pulse and Subcarrier Outputs - Timing Range: 4 µs advance, 4 µs delay relative to the test-signal and black-burst outputs Genlock Genlock Source (Comp Video) - Input Configuration: 75 ohm loop-through Return Loss: At least 40 dB to 4.2 MHz Burst Amplitude: 286 mV +1 dB to -6 dB Sync Amplitude: 286 mV +3 dB to -6 dB Genlock Performance - Horizontal Timing Range: 8 µs advance, 8 µs delay Vertical Timing Range: 0, 1, or 2 lines advance or line delay, jumper selectable Burst Lock Range: 3.579545 MHz ±20 Hz Jitter: 0.5° Power Source Mains - Voltage Range: 90 to 132 V AC or 180 to 250 V AC Frequency Range: 48 to 62 Hz Power Consumption - 40 W typical, 60 W maximum Environmental Temperature - Operating: 0 to 50 °C Nonoperating: -40 to 65 °C Certifications EMC - Certified to the EMC Directive 89/336/EEC Safety - Approved to: UL1244, CSA231. Complies with: EN61010-1, IEC61010-1. Physical Characteristics Dimensions mm in. Height 44 1.734 Width 483 19 Depth 561 22.1 Weight kg lbs. Net 6.14 13.5 Shipping 10.4 22.9